---
name: "virt-v2v-release-notes-2.0"
section: "1"
platform: "linux"
package: "virt-v2v"
version: "2.6.0-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/virt-v2v-release-notes-2.0"
---

# virt-v2v-release-notes-2.0(1)

virt-v2v release notes for 2.0

## NAME

virt-v2v-release-notes - virt-v2v release notes for 2.0

## DESCRIPTION

These are the release notes for **virt-v2v 2.0**. This describes the major changes since 1.42.

No release notes were published for 1.44, so that release is covered here.

Virt-v2v 2.0.0 was released on **14 March 2022**.

### Security

There were no security-related bugs found in this release.

### New features

Virt-v2v has been modularised allowing external programs to examine the state of the conversion and inject their own copying step. Further enhancements will be made to this new architecture in forthcoming releases.

The command line is almost identical apart from some debugging features that were removed (see below).  The only significant difference is that the output format (*-of*) now has to be specified if it is different from the input format, whereas previous versions of virt-v2v would use the same output format as input format automatically.

A lot of time was spent improving the performance of virt-v2v in common cases.

Implement conversion of ALT Linux guests (Mikhail Gordeev).

Many bug fixes and performance enhancements were made to oVirt imageio output (Nir Soffer).

There is a new [**virt-v2v-in-place**(1)](/virt-v2v-in-place/1.md) tool which replaces the existing virt-v2v *--in-place* option.

Virt-v2v can now convert guests which use LUKS encrypted logical volumes (Laszlo Ersek).

Option *-oo rhv-direct* has been replaced by *-oo rhv-proxy*, and direct mode (which is much faster) is now the default when writing to oVirt, with proxy mode available for restricted network configurations (thanks: Nir Soffer).

The following command line options were removed: *--print-estimate*, *--debug-overlays*, *--no-copy*.

Virt-v2v no longer installs the RHEV-APT tool in Windows guests.  This tool was deprecated and then removed in oVirt 4.3.

Deprecated tool virt-v2v-copy-to-local has been removed.  This was deprecated in November 2018.

### Other fixes

Remove reference to prl\_strg driver in Windows guests to avoid BSOD (Denis Plotnikov).

Fix conversions of UEFI Linux guests that don't provide their own fallback bootloader (Denis Plotnikov).

Remove use of [**nbdkit-readahead-filter**(1)](/nbdkit-readahead-filter/1.md).  This filter uses a naive strategy and it had several negative effects on conversions.

Remove prompts for interactive passwords.  Normally you should try to use the *-ip* and/or *-op* options to supply passwords.

For Windows guests, we insert a schtasks command.  However the parameters of this command are timezone dependent and so it failed in non-European timezones.  (Thanks: Dinesh Herath, Tomáš Golembiovský, Bryan Kinney, Mark Zealey, Xiaodai Wang)

Virt-v2v will reauthenticate with vCenter servers periodically when copying guests over HTTPS which stops large guests and/or slow copies taking longer than about 30 minutes from failing.

Virt-v2v now sets libguestfs SMP to match number of physical host CPUs, which helps performance of certain conversion steps.

Virt-v2v output to oVirt now attempts to set the machine and firmware type correctly.  Note an exact mapping is not always possible and oVirt may ignore our recommendations (incorrectly) sometimes.

Virt-v2v now generates a virtio-vsock device for guests which support it (Valeriy Vdovin).

All guests now need at least 100 MB of free space for conversion to succeed (Ming Xie).

Standard VGA instead of QXL is now used as the video type for converted guests (Laszlo Ersek).

Older guests (eg RHEL 6) will use the virtio-transitional model after conversion.  This feature and the machine type are now usually determined from the libosinfo database, falling back to hard-coded values if libosinfo is not available (Laszlo Ersek).

When virt-v2v prints messages to a pipe or file it no longer wraps them, making parsing simpler.  You can enable wrapping in this mode using *--wrap* (Laszlo Ersek).

Windows guest firstboot scripts installed by virt-v2v now run in the right order, making network configuration happen earlier (Laszlo Ersek).

### Build changes

libguestfs ≥ 1.44 is now required.

[**nbdcopy**(1)](/nbdcopy/1.md) and OCaml NBD bindings, both from libnbd ≥ 1.10, are now required.

nbdkit ≥ 1.22 is now required (Nir Soffer).

pcre2 (instead of pcre) is now required.

gnulib is no longer bundled or used by virt-v2v.

OCaml ≥ 4.04 is now required.  OCaml 4.13 support has been added in this release.

OpenSSH scp ≥ 8.8 is now required.  Earlier versions will fail because the command line syntax was changed incompatibly.

### Internals

Weblate instead of Zanata is now used for translations (Pino Toscano).

### Bugs fixed

- https://bugzilla.redhat.com/2051394

  Missing error message of 'insufficient free space in the conversion server temporary directory'

- https://bugzilla.redhat.com/2044922

  nbdinfo output to stdout instead of stderr during virt-v2v conversion

- https://bugzilla.redhat.com/2044911

  virt-p2v conversion hangs with RHEL9 virt-v2v

- https://bugzilla.redhat.com/2043333

  'model='virtio-transitional' is wrongly added when converting windows guest to local by rhel9 v2v

- https://bugzilla.redhat.com/2041886

  virt-v2v hangs for several minutes when using -ic vpx://... -it vddk with incorrect IP address

- https://bugzilla.redhat.com/2041852

  Improve the unclear assertion failure at input\_xen\_ssh.ml

- https://bugzilla.redhat.com/2041850

  Can not specify '-oo json-disks-pattern' in '-o json' mode

- https://bugzilla.redhat.com/2039597

  Failed to import VM when selecting OVA as a source on RHV webadmin

- https://bugzilla.redhat.com/2039255

  Conversion performance is not good when convert guest by modular virt-v2v

- https://bugzilla.redhat.com/2034240

  calling "get\_disk\_allocated" in "create\_ovf" breaks the rhv-upload output plugin

- https://bugzilla.redhat.com/2033096

  RFE: Remove -oo rhv-direct and add -oo rhv-proxy option

- https://bugzilla.redhat.com/2032324

  nbdcopy command failed when using v2v to convert guest from ESXi6.5 via vddk \> 6.5 + rhv-upload to rhv4.4

- https://bugzilla.redhat.com/2032112

  Add virt-v2v and libvirt version to the beginning of v2v debug log

- https://bugzilla.redhat.com/2027673

  V2V can't convert guest from VMware via vmx+ssh when openssh version is 8.7p1-5

- https://bugzilla.redhat.com/2027598

  There is no guest listed in export domain if use v2v to convert guest to rhv via -o rhv

- https://bugzilla.redhat.com/1994984

  virt-v2v can't convert bitblocker windows guest with libguestfs error: /dev/mapper/cryptsda: No such file or directory

- https://bugzilla.redhat.com/1977681

  The usage description of '-oo rhv-disk-uuid=UUID' in man virt-v2v should be updated

- https://bugzilla.redhat.com/1976607

  \[RFE\] Drop QXL for guests on CentOS 9 clusters

- https://bugzilla.redhat.com/1976024

  \[RFE\]\[v2v\] \[upload/download disk/CBT\] Failed to attach disk to the VM - disk is OK but image transfer still holds a lock on the disk

- https://bugzilla.redhat.com/1972125

  Update privileges for Non-admin vmware role when ESXi host has enabled host encryption mode in virt-v2v-input-vmware man page

- https://bugzilla.redhat.com/1967941

  virt-v2v can't install qemu-guest-agent for rhel9 guest during conversion

- https://bugzilla.redhat.com/1964324

  assertion failed at parse\_ova.ml when ova directory ends with '/'

- https://bugzilla.redhat.com/1961107

  Change video type from qxl to vga after v2v conversion

- https://bugzilla.redhat.com/1960087

  v2v import from vCenter fails when using interactive password because cookie-script tries to be interactive

- https://bugzilla.redhat.com/1949147

  Should improve the minimum free space for windows guest in v2v man page and better to improve v2v error message about no space left for windows guest

- https://bugzilla.redhat.com/1945549

  Delete or improve the warning info about rhev-apt during v2v converting windows guest on rhel9

- https://bugzilla.redhat.com/1942325

  Virt-v2v should add 'model='virtio-transitional' to RHEL \<=6 guest virtio devices during conversion if target is rhel9 system

- https://bugzilla.redhat.com/1926102

  "virt-v2v: warning: there is no QXL driver for this version of Windows" still shows, even though we copied qxldod driver to the guest

- https://bugzilla.redhat.com/1917760

  VMware tools not getting uninstalled as part of IMS

- https://bugzilla.redhat.com/1903960

  Should hidden "virt-v2v: warning: /usr/share/virt-tools/pnp\_wait.exe is missing.."during conversion

- https://bugzilla.redhat.com/1901489

  VDDK 6.7 repeatedly reconnects with nbdkit: vddk\[1\]: debug: NBD\_ClientOpen: attempting to create connection to vpxa-nfc:// followed by virt-v2v failure

- https://bugzilla.redhat.com/1895323

  After virt-v2v, qemu-ga does not run at Windows firstboot if the timezone is not M/d/yyyy format

- https://bugzilla.redhat.com/1872100

  Should correct info about 'UEFI on OpenStack' in virt-v2v-support man page

- https://bugzilla.redhat.com/1872094

  Virt-v2v should convert UEFI guest to openstack via openstack option successfully

- https://bugzilla.redhat.com/1871754

  RFE: Should clarify which file is correct authentication file for openstack/glance conversion in virt-v2v-output-openstack man page

- https://bugzilla.redhat.com/1868690

  Ceph block device will be destroyed if v2v convert guest to ceph block device and guest disk size is greater than ceph block device

- https://bugzilla.redhat.com/1858775

  RFE: virt-v2v should check the ip info when specify guest's ip

- https://bugzilla.redhat.com/1858765

  V2V option --keys-from-stdin gives error: getline: Inappropriate ioctl for device

- https://bugzilla.redhat.com/1854275

  document that vmx+ssh "-ip" auth doesn't cover ssh / scp shell commands

- https://bugzilla.redhat.com/1842440

  nbdkit cannot read the password interactively when started from virt-v2v

- https://bugzilla.redhat.com/1841096

  Option --bandwidth and --bandwidth-file isn't working as expected during v2v conversion

- https://bugzilla.redhat.com/1839917

  There is no info "Opening the source -i libvirt -ic vpx://..." shown if any IP is wrong in vpx:// URL during v2v conversion

- https://bugzilla.redhat.com/1838425

  V2V doesn't ask password if there is no option about password file in v2v command line

- https://bugzilla.redhat.com/1837453

  \[RFE\]Remove cache=none for guest after v2v converting to libvirt

- https://bugzilla.redhat.com/1837328

  Virt-v2v cannot convert guest from ESXI7.0 server without vddk

- https://bugzilla.redhat.com/1832805

  v2v conversion will be failed because of memory allocation failure if convert guest from ESXi6.0 or ESXi6.5 via vddk, or use vddk6.5 to convert guest from VMware

- https://bugzilla.redhat.com/1789279

  virt-v2v should give more clear error info when use some special invalid uuids for disks

- https://bugzilla.redhat.com/1788823

  Virt-v2v firstboot scripts should run in order, with v2v network configuration happening first

- https://bugzilla.redhat.com/1764569

  V2V conversion fails when a filesystem has no free inodes

- https://bugzilla.redhat.com/1658126

  Virt-v2v can't convert guest using LUKS-on-LV

- https://bugzilla.redhat.com/1637857

  q35 switch caused: error: unsupported configuration: IDE controllers are unsupported for this QEMU binary or machine type

- https://bugzilla.redhat.com/1581428

  virt-v2v use Q35 as default machine-type

- https://bugzilla.redhat.com/1534644

  New way of parsing OVF from OVA that was created by VMware fails.

## SEE ALSO

[**virt-v2v**(1)](/virt-v2v/1.md), [**virt-v2v-release-notes-1.42**(1)](/virt-v2v-release-notes-1.42/1.md), [**guestfs-release-notes-1.40**(1)](/guestfs-release-notes-1.40/1.md).

## AUTHORS

Authors of virt-v2v 2.0:

- Denis Plotnikov

  - Kevin Locke

  - Laszlo Ersek

  - Martin Kletzander

  - Mikhail Gordeev

  - Nir Soffer

  - Pino Toscano

  - Richard W.M. Jones

  - Valeriy Vdovin

  ## COPYRIGHT

Copyright (C) 2009-2022 Red Hat Inc.

## LICENSE

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

## BUGS

To get a list of bugs against libguestfs, use this link: https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools

To report a new bug against libguestfs, use this link: https://bugzilla.redhat.com/enter\_bug.cgi?component=libguestfs&product=Virtualization+Tools

When reporting a bug, please supply:

- •

  The version of libguestfs.

- •

  Where you got libguestfs (eg. which Linux distro, compiled from source, etc)

- •

  Describe the bug accurately and give a way to reproduce it.

- •

  Run [**libguestfs-test-tool**(1)](/libguestfs-test-tool/1.md) and paste the **complete, unedited** output into the bug report.
